Paul Gascoigne got £68,000 in damages from News International last year for phone hacking by the News of the World. Photograph: Scott Heppell/AP

Paul Gascoigne has told how he was so paranoid about phone hacking he spent £60,000 on gadgets from a spy shop to try to identify who was listening in to his voicemails.

In an ITV documentary to be broadcast on Tuesday the former England football star tells how he fell out with his family for six months after accusing them of giving stories to the newspapers.

"I knew my phone was getting hacked, I could tell. And someone was listening to my conversations and where I was going and that and so I went to the spy shop in London. I spent about £60,000 on gadgets," he says, showing a listening device and a hidden camera to detect if anyone has fitted cameras in his house.

Gascoigne got £68,000 in damages from News International last year for phone hacking by the now defunct News of the World, for the "mental harm and distress", the high court was told last year.

"Mr Gascoigne was worried that the information was being obtained by bugging or tapping his telephone conversations, as a result of which he was accused of being paranoid," his lawyer said in the court statement.

Gascoigne also blamed his best friend Jimmy Gardiner for leaking stories to the News of the World.